5.1.2 Reporting period AEs (definitely or probably related to study drug) will be recorded from the time of first dose of study drug until 72 hours following the last dose of study drug. All SAEs will be recorded form the time of the first dose of study drug 7 days after the last dose of study drug. The AE reporting period will not be extended if subjects continue on ticarcillin-clavulanate following the 6 doses of study drug. AEs not or possibly related to study drug will NOT be recorded.